4 degrees is a good camber number. I have mine set at 5 right now, no good reason why, I just wanted to try -5. My caster is set somewhere around +6 or +7. I had my caster set at 4 or 5 when I ran a stock length swingarm. When I put a -2 swingarm on the quad, the 4 degrees of caster was not enuf. The steering was so quick it would throw ya off the quad if you were'nt hanging on tight enuf. It was downright dangerous, but it would turn on a dime. At high speeds it was even more dangerous. Squirrly dangerous. So I layed back my caster to somewhere around 6 or 7..... and found that perfect balance between quick steering and high speed stability. The more caster you add, the more stable she'll feel. More forgiving ride, but the steering will be slower. Its a tradeoff. Id recommend when your setting your caster to experiment with different degrees, if your running the stock lenght swingarm then +4 caster is a good number to start with. If it turns to quickly and its scary-squirrly when the powerband kicks in, then re-set your caster to up another degree to +5 and test it again. Ride it for a few days at each caster setting. I adjusted my caster settings about 10 times till I found the perfect setup. Get used to adjusting the caster, use anti seize on all the A-arm theads so you dont have to worry about seized bolts. You'll be a pro in no time, dont be afraid to try different degrees, camber and caster. This is your time to learn..... have fun with it, use common sense and good luck.